Lock-case



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Look Case;

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llllllll IJ .linnen STATES PATENT Ormea.

EMERY PARKER, OF NEW BRITAIN, CONNECTICUT.

LOCK-CASE.

SPECIFICATION-forming part of Letters Patent No. 236,838, dated January 18, 1881.

Application filed September 8, 1880. (Model.)

-ence being had to the accompanying drawings and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts.

My improvements relate to lock and latchl cases to be applied to doors, particularly such as are too thin for the "insertion of the ordinary mortise-locks, and for other similar purposes for which such'locks are adapted.

My present invention is-intended as an irnprovement upon the lock and latch case for which Letters Patent of the United States were issued to me on the 24th day of August, 1880, No. 231,608; and'its object is to adapt the case to different thicknesses of doors, and to secnre'the case to the door in a simpler and better manner.

In the accompanying drawings, illustrating my invention, Figure lis a view of my improved lock-case as it appears from one side of a door to which it is attached. Fig. 2 is an edge view of the same. Fig. 3 is a view with the front plate removed, so as to show the parts beyond. The back plate of the case is shown in dotted lines. Fig. 4 is a section on the line c b of Figs. l and 3. Fig. 5 is a horizontal section on the line c d of Figs. 3 and 4.

A is one of the side vplates of the lock-case. To this the working parts of the lock or latch are attached in any usual manner. The plate extends beyond the interior parts of the lock, so as to rest against the side of the door, and passes around the edge at Af, as shown in Figs. 2 and 5.

B is the opposite side plate of the lockcase. It rests against the side of the door, `and is attached `to the .plate Aby means of the screws C, which enter the studs D upon the plate A.

E represents the part of the door to which the lock is attached. A hole is cut entirely througnh'the thickness from side to side, as shown in Fig. 3, and upon the side A the wood is cut away to the front edge, as shown in Figs. 4L and 5.

Holes Dl are bored, either entirely or partly, i

through the solid wood of the door between the side plates, into which the screws C or the studs D enter to prevent thelock from being drawn oft', so that the plates are secured without the screws through the edge A,which are ordinarily used.

It will be observed that this construction of the lock-case leaves a portion of the wood -of the door at E', which is not covered, and

the two side plates do not meet around the front edge, as shown in my Letters Patent before referred to, and that, consequently, the present construction is better adapted to doors of various thicknesses.

F is an ornamental escutcheon, formed in one piece with the side plate, A or B, or permanently attached to the same. By this means the advantage of an ornamental escutcheon is obtained without requiring to be attached to the wood of the door.

Gr G are pins entering the wood of the door and forming parts of the plateA or B. These pins can be used to secure the plates to the door to give additional security, or they can be used without requiring the screws C or the studs D to be supported by the Wood of the door.

My improved lock-case serves all the purposes of a mortise-lock in such doors as are too thin for the mortise to be cut, and is like- Wise applicable to all doors, giving as fine a inish as the mortise-lock, and being as easily attached as the ordinary rim-lock. 'l

To attach one of my improved locks to a door, arectangular hole is cut through the whole thickness, and then upon one side this is extended out to the edge of the door. A small recess is out for the edge A', and the parts of the lock-case are placed in position and the screws C inserted. This secures the recess upon the opposite side ofthe door, and

Whole in place.

'What 1 claim as my invention is- The combination of the plate A, adapted 5 to extend around tho edge of the door and sustain the Working parts of the lock, with the flat plate B, adapted to cover the lockconnecting screws G, substantially as described,

EMERY PARKER.` Witnesses:

THEO. G. ELLIS, WILMOT IioRToN. 

